How to Use
- Select the mode: Choose JavaScript or HTML from the mode dropdown
- Paste your code: Enter minified or messy code in the input field
- Pick an indent style: Choose 2 spaces, 4 spaces, or tabs
- Format: Click Format (or press Ctrl+Enter) to beautify the code
- Copy or download: Copy the result to your clipboard or download it as a file
Features
- Beautify JavaScript with proper indentation — turn minified or messy JS into clean, readable code
- Beautify HTML markup — re-indent nested tags for a clear document structure
- Customizable indentation — choose 2 spaces, 4 spaces, or tabs to match your coding style
- Instant stats — see original and formatted file sizes at a glance
- Copy and download — export the result with one click
- 100% client-side — your code never leaves your browser
Use Cases
- Debugging minified code: Beautify a minified production script to inspect and debug it
- Reading third-party code: Re-indent compressed libraries or snippets for easier review
- Code cleanup: Standardize indentation when merging code from different sources
- Learning: Format generated HTML to understand the document structure
Related Tools
Frequently Asked Questions
What is a JavaScript/HTML formatter?
A formatter (also called a beautifier or pretty-printer) takes minified or messy JavaScript or HTML code and re-indents it with consistent spacing and line breaks, making it readable again. It does not change what the code does — only how it looks.
Does formatting change how my code runs?
No. Formatting only adjusts whitespace, indentation, and line breaks. Your JavaScript executes identically and your HTML renders exactly the same before and after beautifying.
Can this tool minify JavaScript or HTML?
No, this tool is a beautifier only — it formats code for readability, it does not compress it. Minification is a separate process best handled by dedicated build tools.
Is my code uploaded to a server?
No. All formatting runs entirely in your browser using JavaScript. Your code never leaves your device, so it is safe to use with private or proprietary source code.
Which indentation options are supported?
You can choose 2 spaces, 4 spaces, or tabs. Simply pick your preferred style from the indentation dropdown before clicking Format.